2142444220 has 48 divisors (see below), whose sum is σ = 5145835968. Its totient is φ = 733985280.

The previous prime is 2142444209. The next prime is 2142444221. The reversal of 2142444220 is 224442412.

It is a super-2 number, since 2×2142444220² = 9180134471622816800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142444221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202174 + ... + 212506.

It is an arithmetic number, because the mean of its divisors is an integer number (107204916).

Almost surely, 2^2142444220 is an apocalyptic number.

2142444220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2142444220 is an abundant number, since it is smaller than the sum of its proper divisors (3003391748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2142444220 is a wasteful number, since it uses less digits than its factorization.

2142444220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11830 (or 11828 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 2142444220 is about 46286.5446971363. The cubic root of 2142444220 is about 1289.1491735475.

Adding to 2142444220 its reverse (224442412), we get a palindrome (2366886632).

The spelling of 2142444220 in words is "two billion, one hundred forty-two million, four hundred forty-four thousand, two hundred twenty".